CVE-2007-6185 in Eurologon
Summary
by MITRE
Directory traversal vulnerability in users/files.php in Eurologon CMS allows remote attackers to read arbitrary files via a .. (dot dot) in the file parameter in a download action, as demonstrated by a certain PHP file containing database credentials.
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Analysis
by VulDB Data Team • 10/12/2024
The vulnerability identified as CVE-2007-6185 represents a critical directory traversal flaw within the Eurologon Content Management System, specifically affecting the users/files.php component. This weakness enables remote attackers to access arbitrary files on the target system through manipulation of the file parameter during download operations. The vulnerability stems from insufficient input validation and improper handling of directory navigation sequences, allowing malicious actors to traverse the file system hierarchy beyond intended boundaries. The flaw manifests when the application processes user-supplied file parameters without adequate sanitization, creating an opportunity for attackers to craft malicious requests that can access sensitive system files.
The technical implementation of this vulnerability aligns with CWE-22, which categorizes directory traversal attacks as a fundamental weakness in input handling and path resolution. Attackers can exploit this by submitting crafted file parameter values containing sequences such as "../" or "../../../" to navigate upward through directory structures and access files that should remain protected. In the specific case demonstrated, the vulnerability enabled access to PHP files containing database credentials, highlighting the severe implications of such flaws in web applications. The vulnerability operates at the application layer and requires no special privileges or authentication to exploit, making it particularly dangerous as it can be leveraged by anyone with access to the vulnerable web interface.
The operational impact of CVE-2007-6185 extends far beyond simple file disclosure, as it provides attackers with potential access to critical system information including database connection strings, administrative credentials, and other sensitive configuration data. This exposure can lead to complete system compromise, data breaches, and unauthorized access to backend databases. The vulnerability affects the integrity and confidentiality of the affected system, potentially enabling attackers to escalate privileges, modify system files, or establish persistent access. From an attack methodology perspective, this vulnerability maps to ATT&CK technique T1083 (File and Directory Discovery) and T1566 (Phishing with Malicious Attachment) when combined with social engineering approaches to gain initial access.
Mitigation strategies for this vulnerability require immediate implementation of proper input validation and sanitization measures within the affected application. Organizations should implement strict path validation that prevents traversal sequences from being processed, employ whitelisting approaches for file access, and ensure that all user-supplied inputs are properly escaped and validated. The recommended solution involves modifying the users/files.php script to reject any input containing directory traversal sequences or to normalize file paths before processing. Additionally, implementing proper access controls and least privilege principles can limit the damage potential even if the vulnerability is not immediately patched. System administrators should also conduct comprehensive security audits to identify similar vulnerabilities in other components and establish robust monitoring to detect exploitation attempts. The vulnerability demonstrates the critical importance of input validation and proper access control implementation in web applications, aligning with security best practices outlined in standards such as OWASP Top Ten and NIST Cybersecurity Framework.